Snail pool with refill-tank/feeder.

thingiverse

This is a pool for your pet snail (originally designed for genus [Achatina](https://en.wikipedia.org/wiki/Achatina)) along with refill-tank that prevents drying out the pool when the moisture raises away through the substrate that gets accidentally dropped to the pool. The refill-tank can be also used as a feeder for [environmental enrichment](https://wildwelfare.org/enrichment-animal-welfare/), so that your snail won't become lazy ;-) If the dimensions of this pool do not fit your terrarium worry not - the freeCAD files contain a spreadsheet that allows to remix this thing easily with different dimensions even to complete FreeCAD newbies. Unsolved problems: - Archimedes law. If the snail is too big the pool overflows each time the snail enters, and refills back whenever he leaves, which over-moistures/ruins the surrounding substrate and quickly empties the refill tank. - in small terrariums the refill tank could serve as a support so the snail is able to push the terrarium lid open and escape.